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Weather & Climate in Deweyville, UT

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Deweyville experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 28°F in January while summers reach 77°F in July. The area gets 316 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 16.1 inches (drier than the 38-inch national average). The area receives 40.4 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 4,326 feet.

Temperature

28°F Jan (-3°C) 77°F Jul (25°C)
Annual Average50.9°F
6% below US avg
January Average28°F (-3°C)
July Average77°F (25°C)
Sunny Days316 days/yr

Geography

Elevation4,326 ft (1,319 m)
Area6.4 sq mi (16.5 km²)
Population Density54/sq mi
Coordinates41.6930°N, 112.0883°W
TimezoneAmerica/Denver
CountyDavis County County
Nearest AirportBrigham City Regional (BMC)
10 miles away

Precipitation & Snow

Annual Rainfall 16.1"
58% below US avg
Snowfall 40.4"
Wettest Month (May) 2.09"
Driest Month (Jul) 0.94"

Air Quality

AQI Median41.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score87.8 / 100
Social Vulnerability10.6 / 100
Community Resilience97.9 / 100

Hazard Breakdown

Tornado Relatively Low
Earthquake Relatively Moderate
Wildfire Relatively Moderate
Flood Relatively Low
Hail Very Low
Strong Wind Relatively High
Heat Wave Relatively Moderate
Winter Weather Relatively High
Lightning Very High
Ice Storm Relatively Low
Drought Relatively Low
Cold Wave Relatively Low
Landslide Relatively Moderate
Coastal Flood No Rating
Volcano Very Low
Avalanche Relatively High
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

1,243 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.7.

Mar 18, 2020 5 km NNE of Magna, Utah M5.7 105 km 12 km
Apr 21, 2001 29 km WSW of Freedom, Idaho M5.3 148 km 1 km
Sep 2, 2017 12 km E of Soda Springs, Idaho M5.3 119 km 10 km
Sep 10, 2017 9 km NNW of Georgetown, Idaho M5.0 112 km 10 km
Apr 15, 2010 9 km NE of Randolph, Utah M4.9 83 km 10 km
Feb 11, 1994 3 km SSE of Auburn, Wyoming M4.8 149 km 5 km
Sep 10, 2017 12 km ESE of Soda Springs, Idaho M4.7 114 km 5 km
Feb 4, 1994 4 km WNW of Fairview, Wyoming M4.7 143 km 5 km
Sep 11, 2017 9 km NW of Georgetown, Idaho M4.7 109 km 8 km
Sep 3, 2017 15 km ESE of Soda Springs, Idaho M4.7 116 km 10 km
Sep 3, 2017 10 km E of Soda Springs, Idaho M4.7 117 km 8 km
Nov 4, 1992 67 km ENE of Montello, Nevada M4.7 116 km 9 km
Sep 6, 2017 11 km NNW of Georgetown, Idaho M4.6 111 km 10 km
Mar 18, 2020 6 km NNE of Magna, Utah M4.6 104 km 9 km
Mar 18, 2020 5 km NE of Magna, Utah M4.6 105 km 11 km
Feb 7, 1994 4 km SW of Fairview, Wyoming M4.5 139 km 5 km
Sep 4, 2017 13 km ESE of Soda Springs, Idaho M4.5 116 km 6 km
Jan 26, 2018 5 km NNW of Georgetown, Idaho M4.4 110 km 10 km
Feb 3, 1994 2 km SW of Auburn, Wyoming M4.4 149 km 5 km
Feb 3, 1994 13 km WSW of Auburn, Wyoming M4.4 139 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

42 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 16 injuries.

Date Rating Distance Path Fatalities
Aug 14, 1968 EF2 49 km 1.5 mi 0
Jun 3, 1963 EF2 92 km 2.0 mi 0
Sep 2, 2021 EF1 94 km 2.1 mi 0
Sep 22, 2016 EF1 59 km 2.9 mi 0
Aug 20, 1998 EF1 73 km 0.1 mi 0
May 29, 1996 EF1 45 km 1.3 mi 0
Jun 2, 1993 EF1 97 km 1.0 mi 0
Sep 23, 1992 EF1 68 km 2.0 mi 0
Sep 17, 1989 EF1 34 km 0.2 mi 0
May 29, 1987 EF1 38 km 0.2 mi 0
May 21, 1986 EF1 86 km 0.5 mi 0
May 21, 1986 EF1 52 km 5.0 mi 0
Jun 30, 1982 EF1 49 km 1.2 mi 0
May 6, 1981 EF1 21 km 0.5 mi 0
Jun 23, 1965 EF1 81 km 0.6 mi 0
May 25, 1954 EF1 65 km 0.5 mi 0
May 28, 2018 EF0 60 km 0.1 mi 0
Jul 7, 2013 EF0 87 km 1.0 mi 0
May 3, 2009 EF0 33 km 1.0 mi 0
Jul 25, 2007 EF0 21 km 0.3 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 3.6 m (12 ft).

Year Location Cause Max Wave Deaths Distance
1909 UTAH Earthquake 3.6 m — 52 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Wapi Lava Field (162 km).

Name Type Elevation Last Eruption Distance
Wapi Lava Field Shield 1,604 m (5,262 ft) -300 162 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: STONE 2 (50,677 acres, 2006).

Year Name Acres Burned Distance
2006 STONE 2 50,677 75 km
2001 UNNAMED 38,647 41 km
1994 ELEVATOR 31,854 41 km
2013 STATE 31,011 43 km
2006 HOGUPS 30,094 93 km
2016 BROAD MOUTH 21,009 26 km
2005 SALLY 19,726 92 km
2005 PARK VALLEY 18,700 94 km
1996 GOLDEN SPIKE 16,186 41 km
2007 CLEVELAND 16,172 73 km
2016 WEST ANTELOPE 15,483 87 km
1999 BRIDGER BA 15,227 97 km
2006 SCORPIO 14,887 99 km
2000 HOGUP 14,688 95 km
2018 GORING 14,538 29 km
2018 NORTH EDEN 14,398 90 km
2007 COW CANYON 13,447 82 km
2017 WILDCAT 13,100 81 km
1992 MEADOW DIVIDE 12,968 83 km
2000 TAYLOR 12,633 59 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 28°F (-3°C) 1.5 in
February 29°F (-2°C) 1.4 in
March 38°F (3°C) 1.7 in
April 45°F (7°C) 1.7 in
May 54°F (12°C) 2.1 in Wettest
June 63°F (17°C) 1.3 in
July 77°F (25°C) 0.9 in Warmest, Driest
August 70°F (21°C) 0.9 in
September 60°F (16°C) 1.4 in
October 48°F (9°C) 1.7 in
November 35°F (2°C) 1.5 in
December 26°F (-4°C) 1.4 in Coldest

Deweyville has a seasonal temperature swing of 51°F / from 26°F in December to 77°F in July. Total annual precipitation is 17.6 inches, with May being the wettest month (2.1") and July the driest (0.9").

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